Auxiliary seat for tricycles



A. DOBROWULSKI. AUXILIARY'SEAT FOR TRICYCLES'.

APPLICATION FILED NOV. 25,1918.

Patented Apr. 19,'-1921.

- UNITED PAT-ENT .orF 1vol-1.A s

Aprons noBnoWoLsxL or RAciNE, Wissensm;

To allzu/'wm it may concemf `1 Be it known that I, ALroivs DoBRowoLsKI,

-ay citizen of the UnitedStates, residing at Racine, county of Racine, andSta'te of Wisconsin7 have `invented new and-useful Im-` provements in Auxiliary Seats'for'T-ricycles, of which the=following is la specification.

My invention relates to improvements fin auxiliary seatsfortricycles. '4

The. ob'ect of my invention isto provide .a rear seat attachment which Vcanealsil-y'be Yapplied to any ordinary tricycle", and dresiliently, but securely, supported, andi-which can beremoved or replaced at pleasure. I propose to provide lmeansfor not only uremoving the seat by `leaving its support attached to the rear jaxle'of the tricycleyjbut I also propose to provide meanswhereby the Support mayalso belremovedyf'rom the axle', and replaced at pleasureby any person-nnskilled in mechanics.'` l

In the drawings Figure 1 is a side Iviewv of a tricycle with my improved attachment applied the-reto.

Fig. 2 is a rear viewof the same. f

F ig. 3 is adetailview showinga fragment of the rear axle, and kone ofthe rear fork arms, together withthepassociated `clam-ping members. yg

Like parts are identiedby the same reference characters throughout `the several.

views. j j

The tricycle illustrated in the drawings is of a common type having-a set ofy d1- vergent rear fork arms 1 connecteflfwithand supported by the rear axlek 2 `adjacent to the rear wheels 3. v n

Sets of clamping members 4 and 5 are adapted to embrace the rear axle adjacent to the respective fork arms- 1, and the forward clamping member. 5 is provided with ahook arm 7 adapted to pass in front ofthe fork arm 1, and to engage the latter to prevent ythe clamping member from rotating upon the axle with its upper end swinging rearwardly.

The clamping member 4 is provided with f an upwardly projecting post 9, which passes between guide rollers 10 on the side walls of the rear seat 11. The seat 11 faces rear-l wardly, and it is preferably provided with arms 1.3 to protect the hands and armsV of the occupant,` and also to provide means whereby a small child may be strapped in position in the seat. A foot rest 15 is pref- AWSILIABY SEAT .FOR ,'TMCYQLES- speificauomof Letters Patent. *Patented Apr. 1,9, 1:1921. Application inea November 25', 1913T #serialNa-263,959. y n

erably supported ffromj the seat by'ordinary until f the' latter resilicntly support the l"load thus imposed.

.L suitable housings may lbe* 'applied to 'the sides of 2the seat, which' inclosetheguide rollers I10 land the Lupperl ends `ofthe posts 9, it being-understood that there-will be one 'pos'tf at each side.y of the seat, supported by affs'etfoffclamping ,members 4 and KA5, vsecifr'aed'ftothe rear-axle.

. The clamping membersmay be olf-any desired form. lliey are preferably formedto -V lso `embrace fthe'. axle vthatthey l'can @be secured thereto "bygmeans of ordina-ry bolts 25 passing through them' above andl below the axle, as shown. It is not essential tomy `invention rwhetl-ier the clamping membersvr -be formed in sets members. 4 1

The seat will j-have littleftendencyto'tip Vforwardly abouttheaxle, and 'if this should occur fthe forwardly tilting or tipping 'movement will bring the seat into Contact with the converging upperv portions of the o fork arms 1jr-,without injury tothe occupant `of the seat. But it is very' necessary that of two or more than two vmeans `be provided for effectually preventing the clampingmembers from ro'tating upon the axle in such a manner as to allow the scatto swing rearwardly, and this is racl -complished by providing the arms17 whichr yare adapted to engage against the fork arms,V 1, vand thus vfurnish absolute security against such a tilting movement. It will be observed that even if, through carelessness, one of the clamping members 5 should be entirely disengaged,`the other one with its fork arms 7 would-still be effective to`lr if -fhold the seat in an upright positi0n, sub

ject only to a lateral tilting movement inf Acase theclamping member 4 became disengaged from the axle on one side.

lI claim-:- U

1. The combination with the rear wheels, fork and axle of a tricycle, sets of axle engagng clamping members, an armV connectsprings.

ed with one clamping member. of each set, and adapted to engage in front ot an associated arm of the rear fork, a post moimted upon one clamping member of each set, springs coiled about said posts, anda seat supported by the springs between the rear" wheels, and provided with guides to receive the upper end portions of the posts.

2. The combination with the frame, rear wheels and axle of a tricycle, of a rearwardly Vfacing seat disposed over said axle, a pair ot vertically extending posts connected with the axle near the respective wheels, guides on the seat adapted to loosely engage the posts, springs mounted on the posts and bearing against the under side of said scatto support the same, and connections between the posts and frame of the tricycle to prevent rotative movements of the posts and seat about the axle, said frame being independently connected with and supported by the axle.

3. A rear seat attachment for tricycles,"` comprising the combination with the rear wheels and axle of a rearwardly facing seat, sets of axle engaging members, 'springs mounted thereon in supporting relationto the seat, hook shaped connections adapted to loosely engage the trame of the-tricycle to prevent rotative movements of the clamping members upon the axle, and post em-` bracing guides connected with the respective sides ot the seat, andadapted to prevent tilting movements et the seat upon said v 4l. rlhe combination with a tricycle having a frame including rear forl, fork suplporting axle and wheels, of a support for an auxiliary seat detachably mounted upon the rear axle independently ot thel trame, and having means to looselyengage the Jframe to prevent rotation or the support about the axle7 an auxiliary seat'resiliently mounted on the support and guided thereby torvertical movement independently of the frame. v

5. The combination of the rear wheels,

y them.

fork and axle of'a tricycle, of a Set of clamping members engaging the rear axle and also the fork near the respective wheels, a seat resiliently supported from the clamping members and guided therefrom along vertical lines, said guiding means comprising a set of upwardly extending posts connected with clamping members, sets of pulley shapedvguide rollers carried by the seat, and arranged with the rollers of each set adapted to receive one or' the posts betweenl v6.A The -combination of the rear wheels, fork and axle of a tricycle, of sets of clamping members adapted to engage the fork arms adjacent to and between said wheels, and also the axle,`an upwardly extending post connected with each setV of clamping members, a seat havingside walls provided with pulley shaped guide rollers adapted to receive the posts between them, a bearing member connected with the seat, and compression springs coiled aboutA the post and interposed between the bearing member and the sets of clamping members.

7. The combination of the rear lforli and i axle of a tricycle, of sets of clamping members adapted to engage thev fork arms, and also the axle, an upwardlyextending post connected'with each set of clamping members, a seat having side walls provided with pulley shaped guide rollers adapted to receive the posts between' them, a bearing member connected with the seat, compression springs coiled about the post and interposed between the bearing member andv the sets of clamping members, vra housing connected with the seatat each side thereof, and inclosing the bearing rollers and the upper ends of said posts, and arm rests connected with theseat above said housing. In testimony whereof I ailix my signature in the'pres'enceot two witnesses.

,ALFONS DOBROVOLSKI.

' Witnesses: f

O. C. WEBER,

A. J. MOKERIHAN. 

